Disclosed is a method for effectively performing a non-access stratum (NAS) rejection when performing RRC connection resume in a wireless communication system. A method for performing, by a base station, radio resource control (RRC) connection resume in a wireless communication system, includes performing an RRC connection resume procedure with a user equipment (UE), transmitting a resume request message to a mobile management entity (MME), and receiving a resume failure message including an NAS rejection cause from the MME when the resume request has not been permitted.